Carb on conserver



'May 6 1924.

A. c. CARTER. cannon coNsEnvER Filed May 16 1923 3 Sheets-Sheet 1 A5 a. 81 Y AfTOP/VEY May 6 1924. 1,492,832

A. c. CARTER CARBON CONSERVER Filed May 16 1923 s Sheets- Sheet 2 AT TQENEY Patented May 6, 1924.

- UN TED STATES ALBERT C. CARTER, O'F NORWOOD, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE CHAMPION CONSEBVER COMPANY, OF CINCINNATI, OHIO.

cannon Coliseum In the ordinary use of carbon paper for.

manifolding, inwhich sheets are used of the same size as the sheets of paper being written upon, it usually happens that the central part-of the carbon sheet is exhausted before the ends have been used very much, owing to thefact that many letters do not cover a whole page, and also because the portion of the carbon which comes opposite the letter head is not written upon.

An object of my invention is to support a roll of carbon paper in such manner that the carbon can be readily inserted between the sheets after they are inserted into the machine, and in this manner, the portion of the carbon which comes opposite the lower part of the letter sheet, will not be wasted. As soon as the endof the carbon sheet, which has been repeatedl used becomes exhausted, it can be torn o and fresh carbon presented in writing position.

Another object of the invention is to provide a support for the carbon roll that can be easily mounted upon a typewriting ma-- chine without any 0 ange in the machine, and asreadily detached therefrom.

Afurther object is to provide such a sup-' port which'can be folded into compact relation to the machine when it is desired: to inclose it in a case or close it up in the usual 1 is provided withdownwardly extending ears desk. I I

A still'furth'er object is to provide means for supporting the carbon roll which will enable its quick removal when it is desired to use a new carbon roll for any purpose.

, Other objects will be apparent from the following detailed description and appended claims. I 1

Application filed Kay 18, 1928. Serial No. 639,821.

In the drawings: I Figure 1 is a rear view of the attachment in operative 1position with relation to a typewriting mac ine of conventional design. .Figure 2 is a similar view showing the attachment folded to compact position. 1 Figure 3 is'a side view of the attachment when swun to an inclined position for the better hand ing of long sheets of paper.

Fi re 4 is a front view of the device when detached from the machine. I t

Figure 5 is a fragmentary view showing the means of supporting the device of Figure 4 on the machine.

Figure 6 is a sectional "view through the carbon roll and the end pieces that engage the same. I i Figure 7 is a perspective view of one end piece.

Figure 8\is a perspective view of the other end piece.

Figure 9 is an end view of either end looking from the inner end.

Figure 10 is a perspective view of the. core upon which the carbon is wound.

The drawings show the frame A. of a conventional ty ewritin machine, the present. illustration su stantially that of the piece .U-shaped member 5 having relatively short vertically extending arms" 6 fformed with open bearin s 7 f Somewhatin frontof the member 5, t eside bars 1 areconnected by. a cross bar 8. Near the center of'the bar 5.'it

9 in which is mounted a. ,rol1er 10.. This roller is designed to run on a track. 11 which is attached to the frame of the typewriterthrough two side arms 12" riveted or Slllt' ably fastened to the track bar 11, or madeintegral therewith. The. screws 13 which are used to'hold these arms 12in place-are.

eini so Underwood mac ine, although the attachscrews that. are already in the machine. It will thus be noted that by removing two screws 13 and loosening two screws 4, the whole device may be immediately detached from the machine.

Supported in the frame already described is a frame composed of a base bar 14, two

side bars 15 and a cross bar 17 located near the top of the side bars. These side bars are provided with headed studs 16 which are adapted to fit into the open. end bearings 7 and thus support the frame for pivotal movement. The bar 17 is provided with a serrated lower edge 18 for the purpose of tearing off the used portion of the carbon paper when desired.

Near the center of the bar 14 is provided a beating 19 in which rotates a catch having a horizontal portion, a front arm 20 and a rear arm 21 somewhat longer than the front arm. When the parts are in the position shown in Figure 1, this catch is turned so that the arms- 20 and 21 pass down on opposite sides of the bar 5 and thus hold the frame in upright position. When it is desired to hold the parts in the Figure 3 position, the catch is disengaged from the bar by turning it and the support is tilted backwardly to a slight degree. The catch is then turned downwardly again and the longer arm 21 will engage a notch 22 in the bar 8 and hold the parts in the Figure 3 position. If it is desired to hold the attachment, the catch is disengaged and the frame moved forward to the position shown -in.Figure 2.

A Ushaped member is formed by a transverse bar 23 and side bars 24 and this mem" her is pivoted to the bars 15 by screws 25 which may be any desired form of fastening that will hold the parts for pivotal movement but frictionally retain the member in desired position, as shown for example in Figure 1. When the attachment is used in its inclined position, 'as in Figure 3, this member is preferably moved to a osition in which it nests within the frame ars 15.

The upper ends of the bars 15 are provided with open bearings 26 such as illustrated, or any other equivalent form of hearing may be used as desired. It may be found preferable in some cases to provide keepers to close the open bearings, but this is immaterial so long as the carbon roll supports can be quickly removed or replaced.

The carbon C is preferably wound upon a core 27 of any suitable material, and this core is provided with one or more notches 28 at each end. This core is made much larger than is usually the case in order that the carbon wound upon it will not have the tendency to curl when unwound that it'would have in thecasc of a small core. The core is supported by two end pieces 29 and 30, which may ordinarily be interchangeably used. In the form illustrated,

the end piece 29 is provided with a spring for returning the carbon unrolled, and is shown as located at the left hand side of the machine.

Each end. piece has a large disk 31 through the center of which passes a spindle 32 retained in position by a nut' 33 screwed on the end thereof, washers 34 being interposed as desired. The body of the end piece is a substantially cylindrical member 35 having its edges spun over the disc 31 or in any other suitable .manner attached thereto. On the cylindrical member 35 is provided a lug 36 which is adapted to engage one of the notches'29 when the cylindrical portion is placed within: the core 27. These end pieces maybe formed of sheet metal stamped or spun to appropriate form. Each spindle is provided withaknurled finger piece 37. About one spindle is coiled a spring '38, one end being passed through a hole in the finger piece 37 as shown in Figure 7, while the other end extends downwardly along side of the bar 15 and is retained in a strap bearing39 as, shown in Figures 1 and 2. This permits the end of the spring to move out of the strap bearing 39 when the carbon roll is removed, by simply lifting up on the same. This spring is provided to roll up the carbon that is being used whenever writing on one sheet has been finished and the feed rolls of the typewriter are released for the removal of the written matter. It is not essential and the attachments may be used without the spring and with two end pieces such as shown in Figure 8.

Attached to about the middle of the bar 17 is an upwardly extending member 40 of spring sheet metal formed at its free end to hold a short rod 41 which carries at each end a rubber surfaced roll 42 that is adapted to bear against the-carbon on the roll with light pressure. This tends to hold the roll against accidental movements. avoids unwinding of the carbon when the device is not in use and conduces to a more even operation of the device.

Theoperation of the attachment is obvious. When the parts are in the position shown in Figure 3 for example. the carbon are thrown off, the spring 38, if employed, rewinds the carbon on the roll from whence it is drawn for the next operation. If the spring 38 is not employed, the operator merilly twirls one of the finger pieces 37 quic y and thus rolls up the carbon. The pressure of the rolls 42 against the carbon roll will prevent any overthrow and also cause the carbon to wind properl 'on the roll. Whenever the end portion 0 the carbon sheet is exhausted, it will be torn off across the serrated edge of the bar 17.

It will be understood that rolls of carbon will be provided consisting of one, two or more sheets, for use when it is desired to make one, two or more carbon copies, and the operator can chan e from one roll to the other merely by li in out one carbon roll from its bearings an dropping the next one into place. When closing the machine for any purpose the attachment will be folded into the position shown in Figure 2, or it may be removed by lifting the frame out of the 0 en bearings 7.

The evice is very light but the track provided therefor prevents any additional weight from being imposed on the carriage. It is obvious that the exact form of the attachin members 1 may be modified somewhat for application to different types of machines, an track 11 will also be varied as required.

Such' changes in no way depart from the s irit of the invention. Man other detail c anges in the precise form 0 the structure may be made and it is to be understood that the invention is limited only by the scope of the appended claims.

I claim as my invention:

1. A carbon roll attachment for typewriting machines comprising a member attached to the carriage of the typewriting machine and having open end bearings, a frame having projections pivotally mounted in said.

bearlngs, a movable catch carried by said frame and adapted 'to engage said member to hold the frame in different operative po sitions, and means for supporting a carbon roll in the upper part of said frame.

2. A carbon roll attachment for typewriting machines comprising a member attached to the carria e of the typewriting machine,

and havingearings, a frame having pro- 'jections pivotally mounted in said bearings, a catch carried by the frame and adapted to en age said member to hold the frame in diderent positions, or to be disengaged to permit the frame to fold, means for supporting a carbon roll in the upperpart of said frame, and a cross-bar near the upper end of the frame across which the carbon may be torn.

3. A carbon roll attachment for typewriting machines comprising a-support attached to the carriage of the typewriting machine the method of supporting the and including a U-shaped member withfopen end bearings, a frame having projections engaged in said bearings, a track on the carriage, a roll on the U-shaped member to en gage the track, a catch for holding the frame in vertical orinclined position, and means for supporting a carbon roll-in said frame.

4. A carbon roll attachment for typewriting machines comprising a support attached to the carriage of the typewriting machine and including a U-shaped member with open bearings in its upper ends and a transverse bar, a frame having means to pivotally engage the open bearings, a catch carried by said frame and engagmgthe U- sha ed member to hold the frame in one position and the transverse bar to hold it in another position, a track for supporting the weight of the attachment, and means for supporting a carbon roll in said frame.

5. A carbon roll attachment for typewriting machines comprising a support carried by the carriage of the typewriting machine,

-.a track carried by the machine frame, a

its weight supported on said track, means 1 carried by the frame and engagin the support to hold the frame in a plurality of different positions or to permit its folding to compact position with reference to the machine, and means for supporting a carbon roll in said frame. I

7 A carbon roll attachment fortypewriting machinescomprising a support carried' by the carriage, 'a frame pivotally mounted therein, means for holding said frame in a plurality of operative positions in said su port, means for supporting a carbon roll in said frame, a paper rest carried by said frame, a transverse bar connectin thesides of the frame and having an e ge across which the carbon may be torn.

8. A carbon roll attachment for typewriting'machines comprising a support carried by the carriage, a frame pivotally mounted therein, meansv for supporting a carbon roll in the upper part of the frame, a transverse bar adjacent the carbon roll, a sprin member attached to the bar, and/a car on en- Igaging element carried by said spring meming machines" comprisin a frame supported upon the carriage of t e typewriting ma- A carbon roll attachment for typewritchine, means for holding a carbon roll therein, a transverse bar adjacent the carbon roll, a flat yielding member carried by said bar, and carbon engaging elements carried by said member.

10. A carbon roll attachment for typevvriting machines comprising a frame supported upon the carriage of the typewriting machine, means for holding a carbon r011 therein a transverse bar adjacent the carbon roll, a resilient support carried by said bar, and rolls carried by said support in position to engage the carbon roll.

11. A carbon roll attachment .for type- Writing machines comprising a frame mounted to travel with the carriage of the typewriting machine, means for supporting a carbon roll therein, said means comprising end pieces having spindles, a spring connected to one spindle and to the frame which tends to rewind the carbon on the roll, and means carried by the frame and yieldably engaging the carbon roll to prevent too free movement thereof.

12. A carbon roll attachment for typewriting machines comprising a frame mounted to travel with the carriage, means for holding the frame in a plurality of operative positions, a bar carried by the frame and having an edge across which the carbon may be torn, means for supporting a carbon roll in said frame, and members carried by the bar and resiliently engaging the carbon roll.

In testimony whereof I afiix my signature.

ALBERT C. CARTER. 

